Fixed error generating the sitemap when entering zero for the number of items to include.

Fixed sitemap not generating on some PHP versions.

Core - Redis:

Added ability to use Redis as a data storage method if is also being used as the caching method.

Fixed online users older than 30 minutes showing when using Redis.

Fixed uncaught exception that may occur when using Redis and clearing caches.

Core - Misc

Added a warning to the AdminCP dashboard, and when editing the login handler, if Facebook login is enabled but site is not using https. Also changed the Facebook login setup process to not allow new setups if site is not using https.

Added an option to use a different Facebook application for social promotion (opposed to the Facebook application used for login) so that Facebook login is not affected while your Facebook app is under review.

Added logging any time the support tool has been run.

Improved session handling performance.

Improved performance of viewupdates task.

Improved performance of queue task.

Fixed announcements being shown before the start date.

Fixed error when deleting the node being viewed in AdminCP node trees.

Fixed copying some node settings in the AdminCP not working.

Fixed replacement tags not working in bulk mails within URLs.

Fixed lost image style attributes in bulk emails.

Fixed Acronym Expansion page in AdminCP not line breaking correctly for very long values, breaking the page layout.

Fixed profile field management checking wrong AdminCP restriction.

Fixed CSS and JavaScript files not being deleted when recompiled on upgrade or when running the support tool.

Fixed false warnings from the database checker when using MySQL 8 and in certain other edge cases.